Cat litter box screen



FIG. 1 is a perspective view of a cat litter box screen;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof.

The dashed lines shown in the drawings represent stitching and form part of the claimed design. The shading indicates a leather-like surface treatment.

The broken lines are for purposes of illustration only and form no part of the claimed design. 

The ornamental design for a cat litter box screen, as shown and described. 